#6663FC#6663FC

#6663FC is a mid, highly saturated blue. Relative luminance 0.188; OKLCH L 59.1% C 0.221 H 278.1°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#6663FC
RGB	rgb(102, 99, 252)
HSL	hsl(241, 96%, 69%)
HSV	hsv(241, 61%, 99%)
CMYK	cmyk(59.5%, 60.7%, 0%, 1.2%)
CIE-LAB	lab(50.42, 44.42, -76.09)
CIE-LCH	lch(50.42, 88.10, 300.28°)
OKLab	oklab(59.08% 0.0311 -0.2189)
OKLCH	oklch(59.08% 0.221 278.1)
XYZ	xyz(27.5064, 18.7747, 94.2510)
Luminance	0.1878 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6663FC #F9FC63

analogous

#63ADFC #6663FC #B263FC

triadic

#6663FC #FC6663 #63FC66

tetradic

#6663FC #FC63AD #F9FC63 #63FCB2

square

#6663FC #FC63AD #F9FC63 #63FCB2

split-complementary

#6663FC #FCB263 #ADFC63

monochromatic

#0904E0 #2B27FB #6663FC #A19FFD #DCDBFE

Accessibility & contrast

On white

4.42

#6663FC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#6663FC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6663FC

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6663FC	#FFFFFF	#000000	##000000
##6663FC	1.00	4.42	4.76	4.76
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#007EFF

Deuteranopia (green-blind)

#0072F9

Tritanopia (blue-blind)

#0089A6

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #6663fc;
/* rgb */ color: rgb(102, 99, 252);
/* oklch */ color: oklch(59.1% 0.221 278.1);

Tailwind

colors: {
  custom: {
    50: '#9f90fe',
    500: '#6663fc',
    950: '#000000',
  },
}

SCSS

$custom: #6663fc;
$custom-light: #9f90fe;
$custom-dark: #000000;

JSON

{
  "hex": "#6663fc",
  "rgb": {
    "r": 102,
    "g": 99,
    "b": 252
  },
  "hsl": {
    "h": 241.176,
    "s": 96.226,
    "l": 68.824
  },
  "oklch": {
    "l": 0.59081,
    "c": 0.22108,
    "h": 278.1
  },
  "luminance": 0.18777
}

Semantic roles & 50–950 ramp

primary

#6663FC

secondary

#F3F4C7

accent

#E600E1

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C18

muted

#7F7D86

Preview Lab

Preview with #6663FC

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →